4 EINAR LÖNNBERG AND ERIC MJÖBERG, DR. E. MJÖBERGS EXPEDITIONS TO AUSTRALIA 2 MAMMALS. 
Uromys macropus Gravr. One female specimen from Millaa-Millaa, Northern 
Queensland, ”'/2 1913 »from the nest in the top of a hollow, rotten tree». 
Uromys cervinipes GouLp. A female with 4 young ones caught at Malanda, 
N. Queensland, the l5th of March 1913. 
Dr. MJÖBERG writes about this: »The female carried when I found her all her 
4 young ones hanging attached at the nipples and dragging after her on the ground. 
I chased her for about 10 minutes in and out of my tent without that the young 
ones let go their hold. Not before I had put them and the mother in alcohol they 
dropped from the nipples.> 
The size of these young ones varied between 50 and 55 mm. in length of head 
and body; the length of the tail is not in constant relation to that of the body, 
the tail of one of the smallest specimens measuring about 45 mm. and that of one 
of the largest measuring only about 40 mm. They are already hairy. The incisors 
of both jaws are developed, and the opening of the mouth appears to be normal, not 
narrowed, nor obliterated at the sides as in the marsupials. 
Another specimen apparently of the same kind has been collected !?/s 1913 in 
the jungle at Millaa Millaa, Northern Queensland. This latter is stated to have had 
a total length of 26 cm. 
As the former of these specimens has been preserved in alcohol I have had the 
opportunity of making the following observations on the morphology of the digestive 
tract which are of a certain interest. 
The ventriele of Uromys cervinipes has the shape of a thick sausage curved 
together; the length of this organ along the middle of the side from one blind end 
to the other is about 60 mm. The glandular pyloriec portion appears to be about 
”/s of the entire ventricle. The margo plicata of the interior is well developed, but 
there is no exteriorly visible constriction. 
The small intestine measured when still adherent to the mesentery about 727 
mm. The cecum is rather large attaining a length of 87 mm. The length of the 
large intestine is about 212 mm. A vwalvula tileoccecalis is developed. The proximal 
portion of the colon is provided with folds which are obliquely longitudinal. The 
paracecal loop is pretty long. 
Uromys cervinipes feeds, as the contents of the digestive tract prove, at least 
chiefly on vegetable matter. In consequence of this the ventriele and the intestine 
are more adapted to such a diet as f. i in the omnivorous Epimys norvegicus. In 
Uromys the cxecum is decidedly longer than the ventricle, and the length of the large 
intestine is comparatively greater, so that it is contained only 3 '/2 times in that of 
the small intestine, while the same organ of Epimys norvegicus is contained 4 times, 
or more, in the length of the small intestine. It is interesting to compare with this 
the fact that in the still more herbivorous Lemmings and allies these intestines are 
almost subequal, or at least the large about "'/s of the small, but on the other hand 
in Hydromys which gets its food from the animal kingdom the length of the large 
